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137 lines
3.4 KiB
137 lines
3.4 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright (C) 2016 Freescale Semiconductor, Inc. |
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* Copyright 2017~2018 NXP |
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* Author: Dong Aisheng <[email protected]> |
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* |
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* File containing client-side RPC functions for the MISC service. These |
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* function are ported to clients that communicate to the SC. |
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* |
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*/ |
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#include <linux/firmware/imx/svc/misc.h> |
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struct imx_sc_msg_req_misc_set_ctrl { |
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struct imx_sc_rpc_msg hdr; |
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u32 ctrl; |
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u32 val; |
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u16 resource; |
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} __packed __aligned(4); |
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struct imx_sc_msg_req_cpu_start { |
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struct imx_sc_rpc_msg hdr; |
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u32 address_hi; |
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u32 address_lo; |
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u16 resource; |
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u8 enable; |
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} __packed __aligned(4); |
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struct imx_sc_msg_req_misc_get_ctrl { |
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struct imx_sc_rpc_msg hdr; |
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u32 ctrl; |
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u16 resource; |
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} __packed __aligned(4); |
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struct imx_sc_msg_resp_misc_get_ctrl { |
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struct imx_sc_rpc_msg hdr; |
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u32 val; |
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} __packed __aligned(4); |
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/* |
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* This function sets a miscellaneous control value. |
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* |
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* @param[in] ipc IPC handle |
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* @param[in] resource resource the control is associated with |
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* @param[in] ctrl control to change |
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* @param[in] val value to apply to the control |
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* |
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* @return Returns 0 for success and < 0 for errors. |
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*/ |
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int imx_sc_misc_set_control(struct imx_sc_ipc *ipc, u32 resource, |
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u8 ctrl, u32 val) |
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{ |
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struct imx_sc_msg_req_misc_set_ctrl msg; |
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struct imx_sc_rpc_msg *hdr = &msg.hdr; |
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hdr->ver = IMX_SC_RPC_VERSION; |
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hdr->svc = (uint8_t)IMX_SC_RPC_SVC_MISC; |
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hdr->func = (uint8_t)IMX_SC_MISC_FUNC_SET_CONTROL; |
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hdr->size = 4; |
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msg.ctrl = ctrl; |
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msg.val = val; |
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msg.resource = resource; |
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return imx_scu_call_rpc(ipc, &msg, true); |
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} |
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EXPORT_SYMBOL(imx_sc_misc_set_control); |
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/* |
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* This function gets a miscellaneous control value. |
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* |
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* @param[in] ipc IPC handle |
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* @param[in] resource resource the control is associated with |
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* @param[in] ctrl control to get |
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* @param[out] val pointer to return the control value |
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* |
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* @return Returns 0 for success and < 0 for errors. |
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*/ |
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int imx_sc_misc_get_control(struct imx_sc_ipc *ipc, u32 resource, |
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u8 ctrl, u32 *val) |
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{ |
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struct imx_sc_msg_req_misc_get_ctrl msg; |
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struct imx_sc_msg_resp_misc_get_ctrl *resp; |
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struct imx_sc_rpc_msg *hdr = &msg.hdr; |
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int ret; |
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hdr->ver = IMX_SC_RPC_VERSION; |
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hdr->svc = (uint8_t)IMX_SC_RPC_SVC_MISC; |
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hdr->func = (uint8_t)IMX_SC_MISC_FUNC_GET_CONTROL; |
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hdr->size = 3; |
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msg.ctrl = ctrl; |
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msg.resource = resource; |
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ret = imx_scu_call_rpc(ipc, &msg, true); |
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if (ret) |
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return ret; |
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resp = (struct imx_sc_msg_resp_misc_get_ctrl *)&msg; |
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if (val != NULL) |
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*val = resp->val; |
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return 0; |
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} |
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EXPORT_SYMBOL(imx_sc_misc_get_control); |
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/* |
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* This function starts/stops a CPU identified by @resource |
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* |
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* @param[in] ipc IPC handle |
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* @param[in] resource resource the control is associated with |
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* @param[in] enable true for start, false for stop |
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* @param[in] phys_addr initial instruction address to be executed |
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* |
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* @return Returns 0 for success and < 0 for errors. |
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*/ |
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int imx_sc_pm_cpu_start(struct imx_sc_ipc *ipc, u32 resource, |
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bool enable, u64 phys_addr) |
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{ |
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struct imx_sc_msg_req_cpu_start msg; |
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struct imx_sc_rpc_msg *hdr = &msg.hdr; |
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hdr->ver = IMX_SC_RPC_VERSION; |
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hdr->svc = IMX_SC_RPC_SVC_PM; |
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hdr->func = IMX_SC_PM_FUNC_CPU_START; |
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hdr->size = 4; |
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msg.address_hi = phys_addr >> 32; |
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msg.address_lo = phys_addr; |
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msg.resource = resource; |
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msg.enable = enable; |
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return imx_scu_call_rpc(ipc, &msg, true); |
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} |
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EXPORT_SYMBOL(imx_sc_pm_cpu_start);
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